diff --git a/keyboards/gmmk/pro/ansi/keymaps/andrebrait/config.h b/keyboards/gmmk/pro/ansi/keymaps/andrebrait/config.h
new file mode 100644
index 00000000000..1438d317fbd
--- /dev/null
+++ b/keyboards/gmmk/pro/ansi/keymaps/andrebrait/config.h
@@ -0,0 +1,22 @@
+/* Copyright 2021 Andre Brait
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#ifdef RGB_MATRIX_ENABLE
+    #define RGB_DISABLE_TIMEOUT 1200000     // 20 minutes (20 * 60 * 1000ms)
+    #define RGB_DISABLE_WHEN_USB_SUSPENDED
+#endif
diff --git a/keyboards/gmmk/pro/ansi/keymaps/andrebrait/keymap.c b/keyboards/gmmk/pro/ansi/keymaps/andrebrait/keymap.c
new file mode 100644
index 00000000000..febca3b9741
--- /dev/null
+++ b/keyboards/gmmk/pro/ansi/keymaps/andrebrait/keymap.c
@@ -0,0 +1,280 @@
+/* Copyright 2021 Glorious, LLC <salman@pcgamingrace.com>
+   Copyright 2021 Andre Brait <andrebrait@gmail.com>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include QMK_KEYBOARD_H
+
+#ifdef RGB_MATRIX_ENABLE
+    #ifndef RGB_CONFIRMATION_BLINKING_TIME
+        #define RGB_CONFIRMATION_BLINKING_TIME 2000 // 2 seconds
+    #endif
+    #if RGB_CONFIRMATION_BLINKING_TIME > 0
+        #include <lib/lib8tion/lib8tion.h>
+    #endif // RGB_CONFIRMATION_BLINKING_TIME > 0
+#endif // RGB_MATRIX_ENABLE
+
+// clang-format off
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+//      ESC      F1       F2       F3       F4       F5       F6       F7       F8       F9       F10      F11      F12	     Del          Rotary(Play/Pause)
+//      ~        1        2        3        4        5        6        7        8        9        0         -       (=)	     BackSpc           Home
+//      Tab      Q        W        E        R        T        Y        U        I        O        P        [        ]        \                 PgUp
+//      Caps     A        S        D        F        G        H        J        K        L        ;        "                 Enter             PgDn
+//      Sh_L              Z        X        C        V        B        N        M        ,        .        ?                 Sh_R     Up       End
+//      Ct_L     Win_L    Alt_L                               SPACE                               Alt_R    FN       Ct_R     Left     Down     Right
+
+
+    // The FN key by default maps to a momentary toggle to layer 1 to provide access to the RESET key (to put the board into bootloader mode). Without
+    // this mapping, you have to open the case to hit the button on the bottom of the PCB (near the USB cable attachment) while plugging in the USB
+    // cable to get the board into bootloader mode - definitely not fun when you're working on your QMK builds. Remove this and put it back to KC_RGUI
+    // if that's your preference.
+    //
+    // To put the keyboard in bootloader mode, use FN+backslash. If you accidentally put it into bootloader, you can just unplug the USB cable and
+    // it'll be back to normal when you plug it back in.
+    //
+    // This keyboard defaults to 6KRO instead of NKRO for compatibility reasons (some KVMs and BIOSes are incompatible with NKRO).
+    // Since this is, among other things, a "gaming" keyboard, a key combination to enable NKRO on the fly is provided for convenience.
+    // Press Fn+N to toggle between 6KRO and NKRO. This setting is persisted to the EEPROM and thus persists between restarts.
+    [0] = LAYOUT(
+        KC_ESC,  KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,  KC_DEL,           KC_MUTE,
+        KC_GRV,  KC_1,    KC_2,    KC_3,    KC_4,    KC_5,    KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_MINS, KC_EQL,  KC_BSPC,          KC_HOME,
+        KC_TAB,  KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,    KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    KC_LBRC, KC_RBRC, KC_BSLS,          KC_PGUP,
+        KC_CAPS, KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, KC_QUOT,          KC_ENT,           KC_PGDN,
+        KC_LSFT,          KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH,          KC_RSFT, KC_UP,   KC_END,
+        KC_LCTL, KC_LGUI, KC_LALT,                            KC_SPC,                             KC_RALT, MO(1),   KC_RCTL, KC_LEFT, KC_DOWN, KC_RGHT
+    ),
+
+    [1] = LAYOUT(
+        _______, KC_MYCM, KC_WHOM, KC_CALC, KC_MSEL, KC_MPRV, KC_MNXT, KC_MPLY, KC_MSTP, KC_MUTE, KC_VOLD, KC_VOLU, _______, KC_INS,           _______,
+        _______, RGB_TOG, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,          KC_PSCR,
+        _______, _______, RGB_VAI, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, RESET,            _______,
+        _______, _______, RGB_VAD, _______, _______, _______, _______, _______, _______, _______, _______, _______,          _______,          _______,
+        _______,          _______, RGB_HUI, _______, _______, _______, NK_TOGG, _______, _______, _______, _______,          _______, RGB_MOD, _______,
+        _______, _______, _______,                            _______,                            _______, _______, _______, RGB_SPD, RGB_RMOD, RGB_SPI
+    ),
+
+
+};
+// clang-format on
+
+#ifdef ENCODER_ENABLE
+bool encoder_update_user(uint8_t index, bool clockwise) {
+    if (clockwise) {
+      tap_code(KC_VOLU);
+    } else {
+      tap_code(KC_VOLD);
+    }
+    return true;
+}
+#endif // ENCODER_ENABLE
+
+#ifdef RGB_MATRIX_ENABLE
+
+static void set_rgb_caps_leds(void);
+
+#if RGB_CONFIRMATION_BLINKING_TIME > 0
+static uint16_t effect_started_time = 0;
+static uint8_t r_effect = 0x0, g_effect = 0x0, b_effect = 0x0;
+static void start_effects(void);
+
+#define effect_red() r_effect = 0xFF, g_effect = 0x0, b_effect = 0x0
+#define effect_green() r_effect = 0x0, g_effect = 0xFF, b_effect = 0x0
+#endif // RGB_CONFIRMATION_BLINKING_TIME > 0
+
+bool led_update_user(led_t led_state) {
+    if (led_state.caps_lock) {
+        if (!rgb_matrix_is_enabled()) {
+            /* Turn ON the RGB Matrix for CAPS LOCK */
+            rgb_matrix_set_flags(LED_FLAG_NONE);
+            rgb_matrix_enable();
+        }
+    } else if (rgb_matrix_get_flags() == LED_FLAG_NONE) {
+        /* RGB Matrix was only ON because of CAPS LOCK. Turn it OFF. */
+        rgb_matrix_set_flags(LED_FLAG_ALL);
+        rgb_matrix_disable();
+    }
+    return true;
+}
+
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+    switch (keycode) {
+    #ifdef NKRO_ENABLE
+    #if RGB_CONFIRMATION_BLINKING_TIME > 0
+        case NK_TOGG:
+            if (record->event.pressed) {
+                if (keymap_config.nkro) {
+                    /* Turning NKRO OFF */
+                    effect_red();
+                } else {
+                    /* Turning NKRO ON */
+                    effect_green();
+                }
+                start_effects();
+            }
+            break;
+        case NK_ON:
+            if (record->event.pressed) {
+                if (!keymap_config.nkro) {
+                    /* Turning NKRO ON */
+                    effect_green();
+                    start_effects();
+                }
+            }
+            break;
+        case NK_OFF:
+            if (record->event.pressed) {
+                if (keymap_config.nkro) {
+                    /* Turning NKRO OFF */
+                    effect_red();
+                    start_effects();
+                }
+            }
+            break;
+    #endif // RGB_CONFIRMATION_BLINKING_TIME > 0
+    #endif // NKRO_ENABLE
+        case RGB_MOD:
+        case RGB_RMOD:
+        case RGB_HUI:
+        case RGB_HUD:
+        case RGB_SAI:
+        case RGB_SAD:
+        case RGB_VAI:
+        case RGB_VAD:
+        case RGB_SPI:
+        case RGB_SPD:
+            if (record->event.pressed) {
+                if (rgb_matrix_get_flags() != LED_FLAG_ALL) {
+                    /* Ignore changes to RGB settings while only it's supposed to be OFF */
+                    return false;
+                }
+            }
+            break;
+        case RGB_TOG:
+            if (record->event.pressed) {
+                if (rgb_matrix_is_enabled()) {
+                    switch (rgb_matrix_get_flags()) {
+                        #if RGB_CONFIRMATION_BLINKING_TIME > 0
+                        case LED_FLAG_INDICATOR:
+                        #endif
+                        case LED_FLAG_NONE:
+                            /* Turned ON because of EFFECTS or CAPS, is actually OFF */
+                            /* Change to LED_FLAG_ALL to signal it's really ON */
+                            rgb_matrix_set_flags(LED_FLAG_ALL);
+                            /* Will be re-enabled by the processing of the toggle */
+                            rgb_matrix_disable_noeeprom();
+                            break;
+                        case LED_FLAG_ALL:
+                            /* Is actually ON */
+                            #if RGB_CONFIRMATION_BLINKING_TIME > 0
+                            if (effect_started_time > 0) {
+                                /* Change to LED_FLAG_INDICATOR to signal EFFECTS */
+                                rgb_matrix_set_flags(LED_FLAG_INDICATOR);
+                                /* Will be re-enabled by the processing of the toggle */
+                                rgb_matrix_disable_noeeprom();
+                            } else
+                            #endif
+                            if (host_keyboard_led_state().caps_lock) {
+                                /* Change to LED_FLAG_NONE to signal CAPS */
+                                rgb_matrix_set_flags(LED_FLAG_NONE);
+                                /* Will be re-enabled by the processing of the toggle */
+                                rgb_matrix_disable_noeeprom();
+                            }
+                            break;
+                    }
+                }
+            }
+            break;
+    }
+    return true;
+}
+
+
+void rgb_matrix_indicators_user() {
+    #if RGB_CONFIRMATION_BLINKING_TIME > 0
+    if (effect_started_time != 0) {
+        /* Render blinking EFFECTS */
+        uint16_t deltaTime = sync_timer_elapsed(effect_started_time);
+        if (deltaTime <= RGB_CONFIRMATION_BLINKING_TIME) {
+            uint16_t time = scale16by8(deltaTime, UINT8_MAX / 2);
+            uint8_t led_state = sin8(time) >> 7;
+            uint8_t val_r = led_state * r_effect;
+            uint8_t val_g = led_state * g_effect;
+            uint8_t val_b = led_state * b_effect;
+            rgb_matrix_set_color_all(val_r, val_g, val_b);
+            if (host_keyboard_led_state().caps_lock) {
+                set_rgb_caps_leds();
+            }
+            return;
+        } else {
+            /* EFFECTS duration is finished */
+            effect_started_time = 0;
+            if (rgb_matrix_get_flags() == LED_FLAG_INDICATOR) {
+                /* It was turned ON because of EFFECTS */
+                if (host_keyboard_led_state().caps_lock) {
+                    /* CAPS is still ON. Demote to CAPS */
+                    rgb_matrix_set_flags(LED_FLAG_NONE);
+                } else {
+                    /* There is nothing else keeping RGB enabled. Reset flags and turn if off. */
+                    rgb_matrix_set_flags(LED_FLAG_ALL);
+                    rgb_matrix_disable_noeeprom();
+                }
+            }
+        }
+    }
+    #endif // RGB_CONFIRMATION_BLINKING_TIME > 0
+    if (rgb_matrix_get_flags() == LED_FLAG_NONE) {
+        rgb_matrix_set_color_all(0x0, 0x0, 0x0);
+    }
+    if (host_keyboard_led_state().caps_lock) {
+        set_rgb_caps_leds();
+    }
+}
+
+#if RGB_CONFIRMATION_BLINKING_TIME > 0
+static void start_effects() {
+    effect_started_time = sync_timer_read();
+    if (!rgb_matrix_is_enabled()) {
+        /* Turn it ON, signal the cause (EFFECTS) */
+        rgb_matrix_set_flags(LED_FLAG_INDICATOR);
+        rgb_matrix_enable_noeeprom();
+    } else if (rgb_matrix_get_flags() == LED_FLAG_NONE) {
+        /* It's already ON, promote the cause from CAPS to EFFECTS */
+        rgb_matrix_set_flags(LED_FLAG_INDICATOR);
+    }
+}
+#endif // RGB_CONFIRMATION_BLINKING_TIME > 0
+
+static void set_rgb_caps_leds() {
+    rgb_matrix_set_color(67, 0xFF, 0x0, 0x0); // Left side LED 1
+    rgb_matrix_set_color(68, 0xFF, 0x0, 0x0); // Right side LED 1
+    rgb_matrix_set_color(70, 0xFF, 0x0, 0x0); // Left side LED 2
+    rgb_matrix_set_color(71, 0xFF, 0x0, 0x0); // Right side LED 2
+    rgb_matrix_set_color(73, 0xFF, 0x0, 0x0); // Left side LED 3
+    rgb_matrix_set_color(74, 0xFF, 0x0, 0x0); // Right side LED 3
+    rgb_matrix_set_color(76, 0xFF, 0x0, 0x0); // Left side LED 4
+    rgb_matrix_set_color(77, 0xFF, 0x0, 0x0); // Right side LED 4
+    rgb_matrix_set_color(80, 0xFF, 0x0, 0x0); // Left side LED 5
+    rgb_matrix_set_color(81, 0xFF, 0x0, 0x0); // Right side LED 5
+    rgb_matrix_set_color(83, 0xFF, 0x0, 0x0); // Left side LED 6
+    rgb_matrix_set_color(84, 0xFF, 0x0, 0x0); // Right side LED 6
+    rgb_matrix_set_color(87, 0xFF, 0x0, 0x0); // Left side LED 7
+    rgb_matrix_set_color(88, 0xFF, 0x0, 0x0); // Right side LED 7
+    rgb_matrix_set_color(91, 0xFF, 0x0, 0x0); // Left side LED 8
+    rgb_matrix_set_color(92, 0xFF, 0x0, 0x0); // Right side LED 8
+    rgb_matrix_set_color(3, 0xFF, 0x0, 0x0); // CAPS LED
+}
+
+#endif // RGB_MATRIX_ENABLE
diff --git a/keyboards/gmmk/pro/ansi/keymaps/andrebrait/readme.md b/keyboards/gmmk/pro/ansi/keymaps/andrebrait/readme.md
new file mode 100644
index 00000000000..e7f9978cee7
--- /dev/null
+++ b/keyboards/gmmk/pro/ansi/keymaps/andrebrait/readme.md
@@ -0,0 +1,23 @@
+# andrebrait's GMMK Pro layout
+
+This is pretty much the stock layout with a few things moved around.
+It basically reflects my needs for both Delete and Insert being readily available for coding, as well as a full Home/PgUp/PgDwn/End column.
+
+The differences are as follows:
+
+- Short DEBOUNCE time (5 ms)
+- Per-key debounce algorithm (sym_defer_pk)
+- RGB turns off after 20 minutes of inactivity
+- RGB turns off when USB is suspended
+- Layer 0:
+  - Print Screen (default) -> Delete
+  - Delete (default) -> Home
+- Layer 1 (accessed by pressing Fn):
+  - Fn + Delete -> Insert
+  - Fn + Home -> Print Screen
+
+This keymap also includes CAPS LOCK ON indicator.\
+All left and right side LEDs, and the Caps key LED will turn solid red while CAPS LOCK is ON.
+
+No other changes have been made. \
+The other keys on each layer have been kept intact.
diff --git a/keyboards/gmmk/pro/ansi/keymaps/andrebrait/rules.mk b/keyboards/gmmk/pro/ansi/keymaps/andrebrait/rules.mk
new file mode 100644
index 00000000000..650c79fbdcc
--- /dev/null
+++ b/keyboards/gmmk/pro/ansi/keymaps/andrebrait/rules.mk
@@ -0,0 +1,3 @@
+# Enable additional features.
+
+DEBOUNCE_TYPE = sym_defer_pk
diff --git a/keyboards/gmmk/pro/ansi/keymaps/default/keymap.c b/keyboards/gmmk/pro/ansi/keymaps/default/keymap.c
index c3ddc21c357..65ccaf88f29 100644
--- a/keyboards/gmmk/pro/ansi/keymaps/default/keymap.c
+++ b/keyboards/gmmk/pro/ansi/keymaps/default/keymap.c
@@ -16,6 +16,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #include QMK_KEYBOARD_H
 
+// clang-format off
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
 
 //      ESC      F1       F2       F3       F4       F5       F6       F7       F8       F9       F10      F11      F12	     Prt           Rotary(Mute)
@@ -57,8 +58,9 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
 
 
 };
+// clang-format on
 
-
+#ifdef ENCODER_ENABLE
 bool encoder_update_user(uint8_t index, bool clockwise) {
     if (clockwise) {
       tap_code(KC_VOLU);
@@ -67,3 +69,4 @@ bool encoder_update_user(uint8_t index, bool clockwise) {
     }
     return true;
 }
+#endif // ENCODER_ENABLE
diff --git a/keyboards/gmmk/pro/ansi/keymaps/via/keymap.c b/keyboards/gmmk/pro/ansi/keymaps/via/keymap.c
index 8ffce0c21c8..9b13f75a85f 100644
--- a/keyboards/gmmk/pro/ansi/keymaps/via/keymap.c
+++ b/keyboards/gmmk/pro/ansi/keymaps/via/keymap.c
@@ -16,6 +16,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #include QMK_KEYBOARD_H
 
+// clang-format off
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
 
 //      ESC      F1       F2       F3       F4       F5       F6       F7       F8       F9       F10      F11      F12	     Prt           Rotary(Mute)
@@ -74,8 +75,9 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
     ),
 
 };
+// clang-format on
 
-
+#ifdef ENCODER_ENABLE
 bool encoder_update_user(uint8_t index, bool clockwise) {
     if (clockwise) {
       tap_code(KC_VOLU);
@@ -84,3 +86,4 @@ bool encoder_update_user(uint8_t index, bool clockwise) {
     }
     return true;
 }
+#endif // ENCODER_ENABLE
diff --git a/keyboards/gmmk/pro/iso/keymaps/default/keymap.c b/keyboards/gmmk/pro/iso/keymaps/default/keymap.c
index 123ae805d3d..5fd5f4f7fbd 100644
--- a/keyboards/gmmk/pro/iso/keymaps/default/keymap.c
+++ b/keyboards/gmmk/pro/iso/keymaps/default/keymap.c
@@ -16,6 +16,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #include QMK_KEYBOARD_H
 
+// clang-format off
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
 
 //      ESC      F1       F2       F3       F4       F5       F6       F7       F8       F9       F10      F11      F12	     Prt           Rotary(Mute)
@@ -57,8 +58,9 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
 
 
 };
+// clang-format on
 
-
+#ifdef ENCODER_ENABLE
 bool encoder_update_user(uint8_t index, bool clockwise) {
     if (clockwise) {
       tap_code(KC_VOLU);
@@ -67,3 +69,4 @@ bool encoder_update_user(uint8_t index, bool clockwise) {
     }
     return true;
 }
+#endif ENCODER_ENABLE
diff --git a/keyboards/gmmk/pro/iso/keymaps/via/keymap.c b/keyboards/gmmk/pro/iso/keymaps/via/keymap.c
index 7dae95e4d91..c83af17fe10 100644
--- a/keyboards/gmmk/pro/iso/keymaps/via/keymap.c
+++ b/keyboards/gmmk/pro/iso/keymaps/via/keymap.c
@@ -79,6 +79,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
 };
 // clang-format on
 
+#ifdef ENCODER_ENABLE
 bool encoder_update_user(uint8_t index, bool clockwise) {
     if (clockwise) {
         tap_code(KC_VOLU);
@@ -87,3 +88,4 @@ bool encoder_update_user(uint8_t index, bool clockwise) {
     }
     return true;
 }
+#endif // ENCODER_ENABLE